You can even applybefore your current transcript is available, but the admissions groups likely won't open the application until it is complete with all transcripts.
Jumping around ... seeing those tests in the final weeks of your prep. This ... yourself to some newer material before your final weeks of study, and ...
I'd recommend asking once your finalgrades are in so they can write a better recommendation. If you ask earlier, they probably still will. However, they likely won't be as detailed and strong as they could be. Better to ask after you've gotten that A!